# Apache Airflow

> Updated 2026-09-03 · type: tool · category: workflow-automation · status: active · rev 1

Industry-standard DAG scheduler

- Open source: yes (Apache-2.0)
- Self-hostable: yes
- Pricing model: free
- Best for: Data engineers, ML practitioners, and DevOps teams who need to programmatically author, schedule, and monitor complex data pipelines and workflows.
- Last verified: 2026-09-04

- **Canonical:** https://gtmstacker.com/registry/tool/apache-airflow/
- **Source:** [github · github.com/apache](https://github.com/apache/airflow)
- **Tags:** workflow-automation
- **Repository:** https://github.com/apache/airflow

## Is Apache Airflow open source?

Yes — Apache-2.0-licensed.

## How much does Apache Airflow cost?

It is free to use.

## Can I self-host Apache Airflow?

Yes — it can be self-hosted.


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Industry-standard DAG scheduler